Thermostatic valve



May 31, 1927.

H. s. FAHEY THERMOSTATIC VALVE Filed June 11. 1926 Inventor Patented May 31, 1927. I

I-IILARION s. FAHEY, oreiaarron, AssAorr sntrTs.

trrrERMosrA'rIc; VALVE.

, p Application filed June 11,

This invention relates to an improved thermostatic valveIo f the type adapted to be used in a steam heating system, and it has' moreparticular reference to a valve of this kind which is intended to be installed in the steam circulating pipe and be connet-ted with the steam supplypipe and pipe section leading through one of the radiators. Briefly,v the invention comprises an appropriatecasing with which the steam sup ply pipe and radiator conducting pipe may i be connected, the casing being designed to house a novel thermostat and a valve op- I crating means associated therewith and there being-a by-pass for directing a portion of the steam directly upon the thermostat to insure efiicient operation. of the latter.

My principal object isto'generally'improve upon valves of this class by providing one of comparative simplicity and durability including novel'details arranged in a novel manner to insure the production of a practical device capable of accomplishing the desired result in a most efiicient manner.

'Other objects and advantages of the invention will become apparent from the following description and drawing.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same:

The single figure represents a view in section and elevation of the complete valve showing the pipes connected therewith.

Referring to the drawings in detail, the reference character 1 designates the casing which is here shown as being open at its top and provided at its bottom and on diametrically opposite sides with suitable nipples 2,

3, and 4, respectively. The steam supply pipe 5 from the boiler (not shown) is connected with the nipple 2 and it will be noticed that the inner end of this nipple is fashioned so as to, provide a beveled valve seat 6. The pipe 7 which is connected with the nipple 4: leads to one of the radiators in the system (not shown). Connected with the remaining nipple 3 is a by-pass'8 made up of pipe sections and couplings as shown. The upper end of this by-pass is attached to another nipple or coupling 9 forming a part of a removable closing plate 10 for the open top of the casing.

On the interior of the casing adjacent the top is a bracket 11' with which an arch 12 is connected. The depending portion adjacent the hracket is formed with a guide slot 13 at its lower end and the other depending arm ontheoppositefend constitutes asupport for an operating lever 14-. It will be noted that the lever is pivoted between its center at oneend on the last named'd'epend v 111g arm indicated at 155 Moreover, the short end of the lever- 1s provided with a counterbalancmgweight 16. Attached to the opposite end of the lever' is -a flexible clementli' which passes over pulleys 18 and 19 respectively and is'connecte'd-with a valve v 7 2O COOPBlfilJlG withthe aforesaid seat 6] V It willb-e noted that the pulley 18 is supported 1 on the standard 21 in the casing, while the pulley 19 is supported on the outer end of an upwardly inclined arm- 22 extending from this standard. Attention is also directed to the fact thatthere is a connec{ tion 23 bet'weenthedepending portion 24: of

the arch andthe adjacent wall of; the casing. v

The thermostat 25, which is more orless.

conventional in design, is supported from the parts12 and 23 in any suitable fashion.

The movable diaphragm of the thermostat is provided with a depending pin 26 which engages the intermediate portion of the aforesaid lever for rocking it andpermitting I the valve to close at a predetermined time.

From the toregoingfit is obvious that the steam 'passing through the pipe 5 enters the casing when the valve is openand a portion of the steam passes through the by-pass 8 7 while thegreater portion passes through the pipe 7 through the radiator in the usual Way.

Thetl'iermostat is made to operate at a predetermined temperature and it is therefore obvious that the steam in acting on this,

causes the'downward m oven' ento't the pin 26. In so. do1ng,-the pm presses downwardly on the lever 14, thus overcoming the action of the weight 16 andallowing the valve 20 to drop by gravity and to engage the valve seat and to close the supply pipe 5. It win; thus be seen that instead of opening the steam valve on the radiatorand allowing surplus steam to waste into the. atmosphere, i J i when the system'becomes too hot, it willbe automatically closed and a further supplyofsteam to the radiator will be temporarily out. -0 1%.

From theforegoing description and drawingsit will be seen that I have evolved'and produced anovel contrivance for automati cally-cutting'off the steam supply to a radiator when the system reaches a predetermined ,weight 16 overbala nces the valve 20 and raises it and permits the system to operate 7 again. Naturally, this .efiects a considerable saving of fuel and yet keeps the temperature in the room at a nearly uniformstate. These and other advantages and features of the in ,vention have b'eenmade apparent and as the oper-ation and construction of. the invention is cl'ear,a morelengthy description is thought unnecessary. a 7

While the preferred embodiment of the inv entio'nhas been specifically described and shoW-n,',it is to be understood that minor changes in shape, size, and arrangement of parts, may beresor-ted to Within the field of invention claimed.

Having thus described the invention'what 1 claim as new and desire to secure by Letters Patent is j 1. In a thermostatic valve of the class de scribed, a casing provided with a valve seat, a gravity lowered valve cooperable with said seat, a standard supported in the casing adjacent said valve, an arm carried by said standard, pulleys mounted on the'uppe'r end 30 arm, a pivotally mounted counter-balanced with which .a supply pipe is adapted to be connected, a gravity lowered valve cooperab-le with said supply pipe for closing it at a c predetermined time, a standard supported in the cas ng adyacent the-,valve, an arm carried by said standard, pulleys mounted on the standard and arm, a bracket supported in said casing, an arched member supported from said bracket, a counter balanced lever plVOtGClbGtWGBIi ts center and one'end on one of the depending arms of the arch, theopposite. end of the lever being movable in a guide slot in the remaining depending arms of said arch, a flexible operating connection between the valve and last named end of the lever, said connection being trained over said pulley, and a thermostat associated ith said arch and including a vertically movable operating pin cooperablevvith the central portion of said lever. v r v g V y In testimony whereof'I aflix my signature. of the standard and the outer end of said i v V HHILARIONH'S. Fanny, 

